a(n) = [x^(2^n+n-1)] (x + x^2 + x^4 + x^8 + ... + x^2^n)^n for n>=1.
A135068
a(n) = [x^(2^n+n-1)] (x + x^2 + x^4 + x^8 + ... + x^2^n)^n for n>=1.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =16a(4) =90a(5) =636a(6) =5712a(7) =34336a(8) =537282a(9) =5941780a(10) =99729146a(11) =1049982792a(12) =23200347040a(13) =293841338896
External references
- oeis: A135068